DNA wroteif you are getting more than 110ms to europe than it DOES matter which isp you choose, but as long as its like 110ms and below nothing will drastically change if you are still on the same phone line
edit: you can test your interleaving latency yourself, just do a "tracert" to any ip and the first hop after your router's ip is mostly due to interleaving so if the number is for example 40ms then of your overall latency around 35ms is because of error correction. post your tracert if you like
ping google.com
Pinging google.com [216.58.210.78] with 32 bytes of data:
Reply from 216.58.210.78: bytes=32 time=165ms TTL=49
Reply from 216.58.210.78: bytes=32 time=456ms TTL=49
Reply from 216.58.210.78: bytes=32 time=473ms TTL=49
Reply from 216.58.210.78: bytes=32 time=142ms TTL=49
Ping statistics for 216.58.210.78:
Packets: Sent = 4, Received = 4, Lost = 0 (0% loss),
Approximate round trip times in milli-seconds:
Minimum = 142ms, Maximum = 473ms, Average = 309ms
Tracing route to lhr14s24-in-f14.1e100.net [216.58.210.78]
over a maximum of 30 hops:
1 7 ms 11 ms 11 ms 10.1.1.1
2 85 ms 87 ms 123 ms 10.2.1.10
3 86 ms 87 ms 88 ms 10.2.6.254
4 70 ms 108 ms 77 ms 10.2.6.254
5 92 ms 77 ms 93 ms 172.16.101.222
6 82 ms 92 ms 87 ms 192.167.5.5
7 84 ms 88 ms 87 ms 192.167.5.6
8 86 ms 88 ms 78 ms 10.40.40.8
9 84 ms 87 ms 87 ms rev-212-98-135-121.terra.net.lb [212.98.135.121]
10 82 ms 93 ms 92 ms 172.16.41.17
11 139 ms 152 ms 117 ms 212.73.241.85
12 141 ms 152 ms 142 ms ae-0-11.bar1.Milan1.Level3.net [4.69.142.189]
13 139 ms 137 ms 138 ms 72.14.243.102
14 130 ms 117 ms 117 ms 216.239.47.128
15 165 ms 142 ms 143 ms 72.14.232.78
16 146 ms 147 ms 148 ms 216.239.40.210
17 151 ms 153 ms 137 ms 216.239.40.216
18 145 ms 162 ms 147 ms 216.239.48.85
19 145 ms 147 ms 148 ms 216.239.51.4
20 141 ms 153 ms 152 ms 72.14.238.185
21 154 ms 158 ms 157 ms lhr14s24-in-f14.1e100.net [216.58.210.78]
Trace complete.